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Real-time stablecoin yield index + AI advisor + non-custodial deposit/redeem quotes (x402 paid).
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 1 month ago Due for re-check
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The barker-mcp MCP server exposes 11 tools, focused primarily on developer capabilities. Its published description reads: "Real-time stablecoin yield index + AI advisor + non-custodial deposit/redeem quotes (x402 paid)". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates barker-mcp F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Cross-tool shadowing" and "Cross-tool shadowing". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check barker-mcp's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add barker-mcp to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.barker.money/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Query real-time stablecoin supply yield pools from Barker's index of 500+ DeFi protocols. Returns ranked rows with protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100
Barker's stablecoin market snapshot: total market cap, yield-bearing cap, asset distribution, chain distribution. Use for 'stablecoin market cap', 'USDT market share', '稳定币市场份额'. share_pct fields are
Barker's historical APY trend for stablecoins vs. US Treasury benchmark over a lookback window (7–180 days). Use for 'DeFi vs treasury', 'is stablecoin APY going up', 'crypto yield trend', '稳定币利率走势'.
FLAGSHIP: 'Where should I park my stablecoins right now?' Returns a ranked top-N recommendation across Barker's DeFi yield index (500+ protocols) with data-derived reasons and risk flags per pick (APY
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: barker_pool_detail
A tool description tries to alter the model’s use of another tool.
down. Use after barker_defi_vaults / barker_yield_advisor to inspect one pool. (paRecommendationDescriptions must describe only their own tool.
tool: barker_executable_pools
A tool description tries to alter the model’s use of another tool.
/redeem through barker_execution_quote. Returns executable pools with adapter support,RecommendationDescriptions must describe only their own tool.
tool: barker_execution_quote
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
nderlying-asset token addresses are never accepted as identity (passRecommendationRemove side-channel parameters; constrain tool inputs.
tool: barker_execution_quote
A tool description tries to alter the model’s use of another tool.
of guessing. Use for 'deposit 1000 USDC into this vault', '帮我把 USDC 存进这个池RecommendationDescriptions must describe only their own tool.
tool: barker_vault_position
A tool description tries to alter the model’s use of another tool.
pool_uid (from barker_executable_pools / barker_execution_quote) and the wallet addresRecommendationDescriptions must describe only their own tool.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
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Unified gateway to Algeria's TKAWEN ecosystem: commerce, certification, and AI tools.
Provides access to the Cohereon Doctrine AI safety framework with governance components, tiered access, and agent onboarding.
Agentic rails for complex workflows with receipts, fees, and MCP tool access.
Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
Full single-pool dossier from Barker's index by pool_uid: all APY components (percent unit), TVL, terms, execution capability, reward breakdown. Use after barker_defi_vaults / barker_yield_advisor to
Per-pool APY/TVL time series from Barker's index (default 30d, APY percent unit) for trend and volatility analysis of one pool_uid. Use for 'is this pool's APY stable', '这个池子收益稳不稳'. (paid: $0.005 per
Fuzzy search Barker's pool index by keyword (protocol name / pool name / asset). Resolves natural-language pool references to pool_uid for the detail/history tools. (paid: $0.001 per call via x402)
Barker's cross-chain route availability for a stablecoin from a given chain (bridge/venue coverage). Use for 'bridge USDC from arbitrum', '跨链路径'. (paid: $0.01 per call via x402)
EXECUTION DISCOVERY: which stablecoin vaults in Barker's index support direct deposit/redeem through barker_execution_quote. Returns executable pools with adapter support, live deposit capacity (is_fu
EXECUTION QUOTE (non-custodial): buy an unsigned, ready-to-sign transaction that deposits into or redeems from a stablecoin vault. Returns transaction_request {chainId,from,to,data,value} + route + ri
VAULT POSITION (on-chain read): current redeemable value of a wallet's ERC-4626 vault position. Pass the pool_uid (from barker_executable_pools / barker_execution_quote) and the wallet address; Barker